Valve-grinding machine.



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VALVE amwomc MACHINE,

APPLICATION HLLD JULY 6, H314,

Patented Apr. 13, 1913 13 SEBETS SHLEZ l FNVENTQR F O RREST DEE ENEWITNESSES a a I 7 By 4: d H i S ATTGR N EV F. E. UEHNE.

VALVE GRENDiNG MACHINE APPHCATiON FILED Hum. :924.

1,135,505, Patented Apr.13,1915.

3 SEEETS- QHEET 2.

a i I KAHTNESDSEQ) INVENTOFI v AQfZf/ZTAA:04,04. FURREST FLINT/NE: w.5%: av /Ma QimV ZJJ Hi8 ATTOR N D To all whom it may] concern:

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FORREST E. DEVINE, OF MADISON, WISCONSIN.

VALVE-GRINDING MACHINE.

Application filled July 6, 1914. Serial No. 849,368.

Be it known that I, FORREST E. Davina, a citizen of the United States,residing at Madison, in the county of Dane and State of Wisconsin, haveinvented certain new and useful Improvements in ,Valve-GrindingMachines, of which the following is a specification.

My invention relates to machines for grinding the valves in automobileengines one or more at the same time; and the objects of my'inventionare, first, to provide an adjustable clamping device adapted to attachto the valve chamber or cylinders; second, to afford facilities forreadily attaching to or removing from the top of said clamping device aframe, said frame being provided with a'plurality of pinions meshingwith a rack and a crank handle and reciprocating mechanism for operatingthe pinions; third, to have the pinions disposed in bearings adjustableindependently of each other; and fourth, to drive vertical shaftsslidably disposed through the center of the said pinions. I attain theseobjects by the mechanism shown in the accompanying drawings in whichFigure 1,"is a plan of my device attached to an engine, ig. 2, is afront elevation attached to an engine, the valve chest being shown insection, Fig. 3,, is a front elevation of the clamping bracket andstrap, Figc h, is a sideelevation of the same, and Fig.5, s,-

a section on line A-;B, Fig. 1.

F imilar numerals. refer to similar parts throughout the several views.

' The brackets 1, with the in and lugs 3, secured together by the bar 4,c nstitute the clamping member 0 f my device. The lugs 3, are threadedto receive the set screws 21. The top of the brackets 1, are

flat and in horizontal alinement with each rthcr. A distance from thefront of said brackets 11, are disposed integral lugs 22, threaded toreceive the adjusting screws 20. T he part designated as the framecomprises a front bar 5, a rear flanged bar 6, end blocks 23, andbracket 16. The front and rear bars are secured to the end blocks byscrews and the bracket 16, is secured to the fnont bar by rivets.Approximate the longitudinal center of bracket '16, is disposed thebearing 24. Jeurnaled in said bearing 18 shaft 14. Jand mounted upon theinner end of said shaft is crank disk 12. Adjacent the outer end of saidshaft 14, is disposed crank Specification of Letters Patent.

valves. at its left end and forms a bearing for the tegral ledges 2,

Patented Apr. 13, 1915.

handle 15, and a distance from the center of the crank disk l2,'upon itsinner face is rigidly disposed crank pin 13, which extends through thecenter of slide blodk 11,

with thepinions 8, which are provided with a downwardly projecting hub,that is journaled in the blocks 9, Which" are slidably disposed-betweenthe front and rear rails of the frame and spaced and secured in thedesired position by the screws 19. Said screws are revolubly disposedthrough the brackets 18, which are rigidly" attached to the front sideofthe front bar of the frame. The pinions 8, aforesaid are bored and keyseated to receive the driving spindles 25 and 26. Said spindles beingprovided with keys 9, distance downward from their upper ends to engagethe key seats in the pinions, thereby cooperating therewith. Beingslidably disposed, vertically through the pinions, the

the valves for grinding. The lower ends.

of the spindles are constructed bifurcated or with screw driver pointsto fit the various The bracket 16, is turned backward bar 17.

Having clamped my device to the chest of an engine and adplsted thepinions in vertical alinement with the valves and the spindles inconnection with the valves, it is obvious that byturning the crank 15, are-.

ciprocating movement will be produced in the rack and a rotativereciprocating movement set up in the valves necessary to the propergrinding of them to their seats, and that one or more valves can beground simultaneously.

Having thus described my invention What I claim as new is: I

In a-device of the kind described, two brackets extending downward andhooking under the chest of an engineyledges on the inner faces of saidbrackets resting upon the top edges of said chest, set screws throughthe bottom lugs, a bar secured to the front side of said bracketsfastening the two together, a frame adjustably secured to the 21,1sa,aoa

top ofrlzhesaidbrackets, a bracket securedcarrying vertical spindles,said -spihdles 15 to the front and left end of said frame, a adapted toengage the valves of an autobearing through said bracket, a shaftjourmobile engine, means for adjusting said pinnaled in said bearing, acrank handle ations longitudinally of a frame, means for tached to theouter end of said shaft, a. adjustingthe frame laterally on thebrackcrank disk attached to the inner end of said ets, weights attachedto the top of the afore- 20 shaft, ,a crank p,i in said crank disk, aslidsaidspindles, as described and set forth. 7 ing block revolub ydisposed onsaid crank In testimony whereof I afiix niy signature pin,said block slidably disposed'within a in the presenceof two subscribingwitnesses. link, said link secured to a bar, the bar slidably disposedin the rear bar of the frame, FORREST a toothed rack secured to the faceof said 'Witnesses: sliding bar, said rack in mesh with a plu- CARL N.HILL,

=rality of pinions, said pinions operatively r W. W. FRENCH.

